<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./common/react.min.js"></script>
    <script src="./common/react-dom.min.js"></script>
    <script src="http://cdn.bootcss.com/babel-core/5.8.38/browser.min.js"></script>

</head>
<body>
    <div id="demo"></div>
    <div id="demo"></div>
    <script type="text/babel">
      var  MyForm = React.createClass({
    handleChange:function(){
        var inputValue=ReactDOM.findDOMNode(this.refs.jspang).value;
        console.log(inputValue);
    },
    render:function(){
        return(
            <div>
                <input type="text" onChange={this.handleChange} ref="jspang" defaultValue='jspang'/>
            </div>
        )
    }
});

       ReactDOM.render(<MyForm/>,document.getElementById('demo'))

    </script>
</body>
</html>